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User currently offlineFlyf15 From , joined Dec 1969, posts, RR:
Posted (16 years 10 months 1 day 2 hours ago) and read 693 times:

Could anybody explain the -AU postfix I see on many 737s?

3 replies: All unread, jump to last
User currently offlineBryanG From United States of America, joined May 1999, 453 posts, RR: 0
Reply 1, posted (16 years 10 months 1 day ago) and read 692 times:

The N***AU code is splattered throughout USAirways's fleet. It is on both ex-Piedmont 737-*01 planes and pure-USAir 737-*B7 planes. For the ex-Piedmont planes, I found that they were originally delivered with N***N registrations, but I can't determine when they were switched to the N***AU marks. So seeing a USAirways plane with an N***AU mark won't really tell much about the history of the plane. The -AU postfix is also on some non-737 USAIrways planes.

User currently offlineFlyjoe From United States of America, joined Nov 2005, 322 posts, RR: 0
Reply 2, posted (16 years 10 months 16 hours ago) and read 695 times:

Some of the USAir registration numbers for 737s also end are N***US. However being that the US is a popular two letter code, Northwest uses it quite frequently, USAir wasn't able to register all of it's aircraft in the same three digit number field with the US ending. Take a look at the new US Airways Airbus fleet. They are N***UW. They gave that reasoning above to keep all A319 & A320 aircraft within the same three digit number field.
Also you will see some other airlines, such as Frontier, Vanguard, old WestPac, that end in AU. They were old USAir aircraft that were either sold or returned to the leasing company by USAir and never changed by the new operating airline. The same also applies to the old USAir F28-1000/4000 fleet, ie: Horizon Airlines.

User currently offlineDash8tech From United States of America, joined Jul 1999, 732 posts, RR: 5
Reply 3, posted (16 years 10 months 13 hours ago) and read 692 times:

As a Horizon mech, I can say albeit unofficially that these planes may have been flown by Ansett United, not sure why the N would be there...leased from US Air?

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